Myofibroblastoma is a rare benign mesenchymal tumor of the breast. A small number of cases have been reported in the literature. It is often seen in postmenopausal women and older men. In general, MFP occurs slow-growing within months, well-circumscribed, mobile, single-sided and a hard mass. Due to the variety of morphological variants, it is difficult to distinguish from other breast masses by imaging techniques, tru-cut biopsy plays a key role in diagnosis. Local excision of myofibroblastoma as a benign tumor of the breast is curative. Malign transformation and recurrence after surgery have not been reported. Knowing the right approach to this rare breast mass by general surgeons, reduce unnecessary and mistreatments. We presented a new case of myofibroblastoma which is found in a 42 years old male patients breast, due to its rarity.